Hpf with passive components

[timhof13 10+ year member]

Can you set your high pass filter to low running passive, it seems I have a blown tweeter, hpf has been set at 80htz. Help appreciated .

Click to read more...

 

[timhof13 10+ year member]

Anybody?

 

[RicksI30 10+ year member]

Your question does not make sense, try to explain it better. ON the amp? Head unit? Are you sure you aren't trying to change it from high pass to low pass? If you are using passive crossovers a hpf will not effect a tweeter when set at 80 hz.

 

[timhof13 10+ year member]

That's what I mean, does the hpf matter on the amp. I have heard my tweet make some strange sounds like its blown, not sure how I could have blown it. I always assumed the passive crossover protected the tweet and woofer from specific freq.

 

[RicksI30 10+ year member]

That's what I mean, does the hpf matter on the amp. I have heard my tweet make some strange sounds like its blown, not sure how I could have blown it. I always assumed the passive crossover protected the tweet and woofer from specific freq.

The passive crossover that came with the speakers will low pass the mid and high pass the tweeter. Th hpf on your amp or head unit should be set ~80-100hz to protect the mid from playing too low.

 

---------- Post added at 07:37 PM ---------- Previous post was at 07:36 PM ----------

 

not sure how I could have blown it.

Too much power.

 

[timhof13 10+ year member]

No way on the to much power 75 watts max I set gains very low and head unit never goes above 30/50. Just bad luck I guess, o well ill buy a replacement. Thanks I thought it was set correctly.

 

[RicksI30 10+ year member]

No way on the to much power 75 watts max I set gains very low and head unit never goes above 30/50. Just bad luck I guess, o well ill buy a replacement. Thanks I thought it was set correctly.

99.99% of the time stuff does not just blow, it is almost always from abuse. I would definitely watch your gain/volume, how did you set your gain anyway? What is the exact equipment?

 

[timhof13 10+ year member]

Dmm , and test tones, Phoenix gold sd1300.5 amp previous was rockford punch power, audiocontrol eqs , skar components. I know everyone hates skar. Never had a lick of problems with my jl audios. Just trying out skar products, only had them for 2 months always though that one tweet sounded odd from the beginning. The other one seems fine, if I was clipping them I think they would both blow.

 

[RicksI30 10+ year member]

if I was clipping them I think they would both blow.

Not necessarily, just remember that even though you set the gain with a DMM it does not mean that you won't see any clipping. I'm not trying to be a jerk either, just trying to keep you from having a repeat problem. Hopefully it was just a skar qc issue.

 

[timhof13 10+ year member]

Don't think your a jerk at all. The audiocontrol unit has clipping indicators I believe they turn red. The amp gain is minimum or just a hair higher. I should buy a scope, but I'm kinda cheap. I think Kevin will take care of it, or time to buy something new. Mezzos maybe

 

[zinda 10+ year member]

From what you have said here it's still kinda fuzzy as to what exactly you are asking, but , I can say that if you are using passive xovers on your tweeters it makes no difference where your (active) amp xover is set, since the passive crossovers will block any low sounds from passing through to the tweets. Good quality tweeters are generally pretty durable if used with the supplied xovers. Although I've melted down some passives before and cracked the components even on MB Quart Comp Xovers. I have also seen some pretty high priced tweets glow red hot and saw the domes simply turn black within seconds after installation when I was using active xovers without the pasives hooked up. I will not depend on Active xovers alone any longer. Using a passive that has a point set lower than what you will be working with in combination with the active is most advisable. That way you are guaranteed to never get any noises lower than the passives allow but you can still use the active to move the point up higher to achieve the desired sound. Smaps and pops that are generated along the path to your speakers may not be filtered by the active especially if the active is generating the noise. That's all it will take to pop a tweeter coil, 75w at 80Hz for 1/2 of a second is enough current to fry that tiny wire or create a short across the coil windings. Another thought is that you may want to check your installation, if the screws are not all tightened the same it will cause the diaphragm to twist and may make the coil rub on the magnet from it not running perfectly straight into the gap. Or if its mounted on an uneven surface will cause the same problems. I would check the mounting first by removing it and playing sound while you tweak the speaker slightly with your hands to see if it makes any changes to the sound. Sometimes it takes a while before this problem develops because the plastic face that holds them in place will resist the deformation but over time and some heat they will eventually bend and may stay bent even when remounted. I live in Phoenix AZ so I know all about the problems that heat will cause on a car stereo.

 

[timhof13 10+ year member]

Wow thanks, I've got some digging to do.

 

[calebkhill 10+ year member]

Sure its not the tracks your playing. Tweets are sensitive to bad recordings and a poorly recorded track will make a tweet sound horrible, especially if your running the tweet at rated power.

Also, set your tweets by ready, you never wanna set gains on tweets with a meter, their too sensitive for that.

And here is an inexpensive oscope. I got one works great.

dso nano | eBay

 

[pickup1 5,000+ posts]

If it sounded bad from the beginning. ..might have been toast to begin with.

 

[shadow 10+ year member]

Check your interconnects...